.flex{
    display: flex;
    align-items: center;
    justify-content: center;
}
.headImg{
    display: inline-block;
    width: 30px;
    height: 30px;
    background-color: #419488;
    line-height: 30px;
    border-radius: 50%;
    text-align: center;
    font-size: 20px;
}
.head{
    width: 30px;
    height: 30px;
    border-radius: 50%;
}
.head,.headImg{
    display: none;
}
.layui-nav-item i{
    margin-right: 5px;
}
.layui-icon-app{
    margin-left: 10px;
}
iframe{
    width: 100%;
    height: 100%;
}